Since I own an 88 with the cold start injector is it possible to use a HSR or do I have to convert to SD or a newer computer and harness? I am looking into options for a 350 swap in the near future and I am leaning toward a HSR (not the entire package, just the upper/lower and fuel rails) but if it's a pain in the *** I'll just carb it and forget it.

 

Have you tried the message board over at www.stealthram.com?

 

No need to go to SD, just use '89 MAF code and the need for the cold-start injector is gone.

 

Is that the same as a prom? I don't know jack about FI.

 

it about the same thing..... i guess.


the code on the "prom" is changed. from csi required, to no csi required.

Examples

(MAF) Systems
88' $32B-CODE CSI Required
89' $6E-CODE CSI Eliminated

(MAP) Speed Density
90-92 $8D-CODE

 

The PROM stores the software. You should be able to buy an '89 chip with your chassis needs from Ed Wright or the like. Make sure you tell whoever you're working with about the car model it's going into, so they can get the VSS, A/C switch, etc. set right.

Figure around $200 or so as a ballpark.

Or...just slap a carb on it and give up.

 

so yall are saying i can get a 89 prom and put it in my 86 ecm and it will eliminate my csi

 

You can put a stock '89 MEMCAL into your '86 ECM, but your car won't start. The stock '89 code will want VATS which your car doesn't have.

That's why I was saying to go aftermarket (or burn your own via the DIY-PROM forum) and be sure to get the settings configured for your chassis.

 

There is a guy on this board that does custom chips for $100-$150, EFIMIKE. Sometimes he posts ads in the classifieds section here. Here is his profile. https://www.thirdgen.org/techbb2/mem...o&userid=14195
Another option is the prominator, read about it here https://www.thirdgen.org/techbb2/sho...ght=prominator
and here is the website http://misterbill.homeip.net/aboutprominator.asp
It's a great alternative to burning multiple chips.

 

Actually no...the 85-86 ECM is the '870 ECM while the 87-89 is the '165 ECM...different types and the Proms do not intermix. AFAIK...

HTH...

 

I guess you know something GM doesn't...they put '165 ECMs in TPI cars starting in 1986.

 

Thanks for the info guys. I am really leaning towards keeping fuel injection, it's just a whole new learning experience for me. Maybe that BBK intake will be a good one too.

 

Doh! You are right Kevin...

I have played around with the $32B mask and the $6E mask, but not the straight $32...

cubfanbudman,

I would keep the FI...get a chip burnt to use the '89 ($6E) code as it appears to be the best developed/bug free MAF code out there...and you shouldn't have to worry about swapping in a MAP setup just yet...the MAF can adapt to some basic changes pretty well.

The BBK intake could be cool, but with eight separate runners, assembly/disassembly could suck

 

ok, well i dont have vats but am a 86 tpi , i am gonna look on my ecm ansd find the number